Remove redundant codes in fixing the HF space permission error.

app.py

@@ -19,6 +19,7 @@ import zipfile
 # Fix the HF space permission error when using from_pretrained(..., trust_remote_code=True)
 hf_cache_path = '/tmp/hf_cache'
 os.environ["HF_HOME"] = hf_cache_path
+os.makedirs(hf_cache_path, exist_ok=True)
 
 import transformers
 transformers.utils.move_cache()